After upgrading to Jenkins 2.107.1, the following is seen in the Jenkins logs with regards to the blackduck plugin:

java.io.IOException: java.lang.RuntimeException: Failed to serialize hudson.model.Actionable#actions for class hudson.model.FreeStyleBuild

        at hudson.XmlFile.write(XmlFile.java:200)

        at hudson.model.Run.save(Run.java:1923)

        at hudson.model.Run.execute(Run.java:1784)

        at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)

        at hudson.model.ResourceController.execute(ResourceController.java:97)

        at hudson.model.Executor.run(Executor.java:429)

Caused by: java.lang.RuntimeException: Failed to serialize hudson.model.Actionable#actions for class hudson.model.FreeStyleBuild

        at hudson.util.RobustReflectionConverter$2.writeField(RobustReflectionConverter.java:256)

        at hudson.util.RobustReflectionConverter$2.visit(RobustReflectionConverter.java:224)

        at com.thoughtworks.xstream.converters.reflection.PureJavaReflectionProvider.visitSerializableFields(PureJavaReflectionProvider.java:138)

        at hudson.util.RobustReflectionConverter.doMarshal(RobustReflectionConverter.java:209)

        at hudson.util.RobustReflectionConverter.marshal(RobustReflectionConverter.java:150)

        at com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:69)

        at com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58)

        at com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:43)

        at com.thoughtworks.xstream.core.TreeMarshaller.start(TreeMarshaller.java:82)

        at com.thoughtworks.xstream.core.AbstractTreeMarshallingStrategy.marshal(AbstractTreeMarshallingStrategy.java:37)

        at com.thoughtworks.xstream.XStream.marshal(XStream.java:1026)

        at com.thoughtworks.xstream.XStream.marshal(XStream.java:1015)

        at com.thoughtworks.xstream.XStream.toXML(XStream.java:988)

        at hudson.XmlFile.write(XmlFile.java:193)

        ... 5 more

Caused by: java.lang.RuntimeException: Failed to serialize com.blackducksoftware.integration.hub.jenkins.action.HubReportV2Action#reportData for class com.blackducksoftware.integration.hub.jenkins.action.HubReportV2Action

        at hudson.util.RobustReflectionConverter$2.writeField(RobustReflectionConverter.java:256)

        at hudson.util.RobustReflectionConverter$2.visit(RobustReflectionConverter.java:224)

        at com.thoughtworks.xstream.converters.reflection.PureJavaReflectionProvider.visitSerializableFields(PureJavaReflectionProvider.java:138)

        at hudson.util.RobustReflectionConverter.doMarshal(RobustReflectionConverter.java:209)

        at hudson.util.RobustReflectionConverter.marshal(RobustReflectionConverter.java:150)

        at com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:69)

        at com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58)

        at com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:43)

        at com.thoughtworks.xstream.core.AbstractReferenceMarshaller$1.convertAnother(AbstractReferenceMarshaller.java:88)

        at com.thoughtworks.xstream.converters.collections.AbstractCollectionConverter.writeItem(AbstractCollectionConverter.java:64)

        at com.thoughtworks.xstream.converters.collections.CollectionConverter.marshal(CollectionConverter.java:74)

        at com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:69)

        at com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58)

        at com.thoughtworks.xstream.core.AbstractReferenceMarshaller$1.convertAnother(AbstractReferenceMarshaller.java:84)

        at hudson.util.RobustReflectionConverter.marshallField(RobustReflectionConverter.java:265)

        at hudson.util.RobustReflectionConverter$2.writeField(RobustReflectionConverter.java:252)

        ... 18 more

Caused by: java.lang.UnsupportedOperationException: Refusing to marshal com.blackducksoftware.integration.hub.report.api.ReportData for security reasons; see https://jenkins.io/redirect/class-filter/

        at hudson.util.XStream2$BlacklistedTypesConverter.marshal(XStream2.java:543)

        at com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:69)

        at com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58)

        at com.thoughtworks.xstream.core.AbstractReferenceMarshaller$1.convertAnother(AbstractReferenceMarshaller.java:84)

        at hudson.util.RobustReflectionConverter.marshallField(RobustReflectionConverter.java:265)

        at hudson.util.RobustReflectionConverter$2.writeField(RobustReflectionConverter.java:252)

        ... 33 more